> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999651] serial_cleanup - port 5 > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999653] destroy_serial - (null) So someone called destroy serial with serial->type->desc NULL > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999654] return_serial > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999671] BUG: unable to handle kernel NULL pointer dereference at (null) > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999675] IP: [<(null)>] (null) And serial->type->release NULL > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999762] [<fb877b40>] ? destroy_serial+0x80/0xd0 [usbserial] > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999765] [<fb877ac0>] ? destroy_serial+0x0/0xd0 [usbserial] > Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999770] [<c03f351a>] ? kref_put+0x2a/0x60 Which came from the tty close (which will be after the hangup if you pulled the card out with the modem in use). Kref leak perhaps ? What driver is actually being used for the card itself ? Alan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
